On 10/31/2017 11:38 AM, James Morse wrote:
GHES is doing ioremap_page_range() in both NMI and irq context, neither are safe as it may sleep to allocate intermediate levels of page table. Replace the NMI/irq GHES_IOREMAP_PAGES to use a fixmap entry each. After this nothing uses ghes_ioremap_area or arch_apei_flush_tlb_one(), rip them out. RFC as I've only build-tested this on x86. For arm64 I've tested it on a software model. Any more testing would be welcome. These patches are based on rc7.
For the arm64 and APEI patches: Tested-by: Tyler Baicar <tbaicar@xxxxxxxxxxxxxx> Verified on arm64. I no longer see the BUGs in the GHES code. Thanks! Tyler -- Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project. -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
